Firewall Days, 2012–2015
The MIT Press eBooks · 2022
If Schrodinger's cat were behind the horizon of an AdS black hole, not yet fallen to the singularity, could we determine its state by a measurement in the dual CFT? 1 A gauge/gravity dualist would naturally answer "yes."The CFT is a complete description of the dual black hole, so this information should be available.Indeed, with my students Heemskerk and Sully, and my colleague Don Marolf, we showed how to get it.2 The basic idea, integrating the field equation in the AdS bulk, was worked out by Bena and others noted earlier.It had been refined in a series of papers by Hamilton, Kabat, Lifschytz, and Lowe (HKLL).Our group was the first to apply it to a normal (onesided) black hole, but it seemed to work just fine.You take the